alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Uknown EK Java Exploit"; flow:established,to_client; flowbits:isset,ET.http.javaclient; file.data; content:"DFE42z.class"; classtype:exploit-kit; sid:2020429; rev:3; metadata:created_at 2015_02_16, confidence High, signature_severity Major, updated_at 2024_03_14;)